Soo-min Lim, Ju Ang Kim, Tae‐Ho Lee, Doohyun Lee, Sang‐Hyeon Nam, Jiwon Lim, Eui Kyun Park,
... regeneration. Therefore, we investigated the effects of KPR-A148, a synthetic xanthine derivative on osteoblast differentiation in ... bone regeneration in vivo.The cytotoxicity of KPR-A148 was evaluated using MC3T3-E1 cells by the ... 5-diphenyltertrazolium bromide assay. The effects of KPR-A148 on osteoblast differentiation were examined by alkaline phosphatase ... marker genes. To investigate the effects of KPR-A148 on in vivo bone regeneration, a KPR-A148-containing collagen sponge was implanted into a mouse ...
Tópico(s): Folate and B Vitamins Research
2019 - Springer Science+Business Media | Tissue Engineering and Regenerative Medicine
Jun Zhao, Rubo Zhang, Ling Zhu, Huidan Deng, Fengqing Li, Lei Xu, Jianbo Huan, Xiangang Sun, Zhiwen Xu,
... assays were established (M-A110-129 ELISA, M-A148-174 ELISA) to detect antibodies against PRRSV M ... specificity of M-A110-129 ELISA and M-A148-174 ELISA were (111/125) 88.80%, (69/ ... of the M-A110-129 ELISA and M-A148-174 ELISA were 0.967 and 0.996, ... the NADC30-like PRRSV inactivated vaccine. The M-A148-174 ELISA had the best consistency, with a ... ELISA kit, M-A110-129 ELISA and M-A148-174 ELISA in the field seropositive detection results ... with M-A110-129 ELISA, the PRRSV M-A148-174 ELISA is of value for detecting antibodies ...
Tópico(s): Virus-based gene therapy research
2021 - BioMed Central | BMC Veterinary Research
Christopher P. Busch, D. Dan Ramdath, S Ramsewak, Robert A. Hegele,
... Asian origin, those who were homozygous for PON2 A148/A148 had significantly lower birth weight, by approximately 200 ... 05). For neonates of South Asian origin, PON2 A148/A148 homozygotes were significantly more prevalent in those comprising ... neonates of South Asian origin, homozygosity for PON2 A148/A148, is associated with significantly lower birth weight. This ...
Tópico(s): Paraoxonase enzyme and polymorphisms
1999 - Lippincott Williams & Wilkins | Pharmacogenetics
Produção Nacional
Revisado por pares
Simone Alves de Oliveira, Antônio de Pádua Mansur, C. Crisp Martins Ribeiro, José Antônio Franchini Ramires, Joyce Maria Annichino‐Bizzacchi,
... Q 192 mutations) and PON2 (i.e., G/A148 and C/S311 mutations) in 352 high-risk ... L55 and R/Q192 and the PON2 G/A148 and C/S311 genotypes, respectively. Univariate analysis showed ... 21% vs. 15%; p=0.047) PON2 G/A148 polymorphism in the control subjects. The PON1 M/ ... with lower triglyceride levels and the PON2 G/A148 mutation (GG genotype), with higher total and low- ...
Tópico(s): Apelin-related biomedical research
2003 - Elsevier BV | International Journal of Cardiology
T. Shenar, H. Sana, L. Mahy, J. Maíz Apellániz, P. A. Crowther, M. Gromadzki, A. Herrero, N. Langer, Pablo Marchant, F. R. N. Schneider, K. Sen, I. Soszyński, Silvia Toonen,
We aim to hunt for massive binaries hosting a black hole companion (OB+BH) and establish the natal mass-ratio distribution of massive stars at the subsolar metallicity environment of the Large Magellanic Cloud (LMC). We use the shift-and-add grid disentangling technique to characterize the hidden companions in 51 SB1 O-type and evolved B-type binaries in the LMC monitored in the framework of the Tarantula Massive Binary Monitoring (TMBM). Out of the 51 SB1 systems, 43 (84%) are found to have non-degenerate ...
Tópico(s): Astrophysical Phenomena and Observations
2022 - EDP Sciences | Astronomy and Astrophysics
S. A. Klioner, L. Lindegren, F. Mignard, J. Hernández, M. Ramos-Lerate, U. Bastian, M. Biermann, A. Bombrun, A. de Torres, E. Gerlach, R. Geyer, T. Hilger, D. Hobbs, U. Lammers, P. J. McMillan, H. Steidelmüller, D. Teyssier, C. M. Raiteri, S. Bartolomé, M. Bernet, J. Castañeda, M. Clotet, M. David, C. Fabricius, N. Garralda Torres, J. J. González‐Vidal, J. Portell, N. Rowell, F. Torra, J. Torra, A. G. A. Brown, A. Vallenari, T. Prusti, J. H. J. de Bruijne, F. Arenou, C. Babusiaux, O. L. Creevey, C. Ducourant, D. W. Evans, L. Eyer, R. Guerra, A. Hutton, C. Jordi, X. Luri, C. Panem, D. Pourbaix, S. Randich, P. Sartoretti, C. Soubiran, P. Tanga, N. A. Walton, C. A. L. Bailer‐Jones, R. Drimmel, F. Jansen, D. Katz, M. G. Lattanzi, F. van Leeuwen, J. Bakker, C. Cacciari, F. De Angeli, M. Fouesneau, Y. Frémat, L. Galluccio, A. Guerrier, U. Heiter, E. Masana, R. Messineo, N. Mowlavï, C. Nicolas, K. Nienartowicz, F. Pailler, P. Panuzzo, F. Riclet, W. Roux, G. M. Seabroke, R. Sordo, F. Thévenin, G. Gracia-Abril, M. Altmann, R. Andrae, M. Audard, I. Bellas-Velidis, K. Benson, J. Berthier, R. Blomme, P. W. Burgess, D. Busonero, G. Busso, H. Cánovas, B. Carry, A. Cellino, N. Cheek, G. Clementini, Y. Damerdji, P. de Teodoro, M. Nuñez Campos, L. Delchambre, A. Dell’Oro, P. Esquej, J. Fernández-Hernández, E. Fraile, D. Garabato, P. García-Lario, E. Gosset, R. Haigron, J. L. Halbwachs, N. C. Hambly, D. L. Harrison, Daniel Hestroffer, S. T. Hodgkin, B. Holl, K. Janßen, G. Jévardat de Fombelle, S. Jordan, A. Krone-Martins, A. C. Lanzafame, W. Löffler, O. Marchal, P. M. Marrese, A. Moitinho, K. Muinonen, P. Osborne, E. Pancino, T. Pauwels, A. Recio–Blanco, C. Reylé, M. Riello, L. Rimoldini, T. Roegiers, J. Rybizki, L. M. Sarro, C. Siopis, M. Smith, A. Sozzetti, E. Utrilla, M. van Leeuwen, U. Abbas, P. Ábrahám, A. Abreu Aramburu, C. Aerts, J. J. Aguado, M. Ajaj, F. Aldea-Montero, G. Altavilla, M. A. Álvarez, J. Alves, R. I. Anderson, E. Anglada Varela, T. Antoja, D. Baines, Steven G. Baker, L. Balaguer-Núñez, E. Balbinot, Z. Balog, C. Barache, D. Barbato, M. Barros, M. A. Barstow, J.-L. Bassilana, N. Bauchet, U. Becciani, M. Bellazzini, Á. Berihuete, S. Bertone, L. Bianchi, A. Binnenfeld, S. Blanco-Cuaresma, T. Boch, D. Bossini, S. Bouquillon, A. Bragaglia, L. Bramante, E. Breedt, A. Bressan, N. Brouillet, E. Brugaletta, B. Bucciarelli, Alexandru Burlacu, A. G. Butkevich, R. Buzzi, E. Caffau, R. Cancelliere, T. Cantat-Gaudin, R. Carballo, T. Carlucci, M. I. Carnerero, J. M. Carrasco, L. Casamiquela, M. Castellani, A. Castro-Ginard, L. Chaoul, P. Charlot, L. Chemin, V. Chiaramida, A. Chiavassa, N. Chornay, G. Comoretto, G. Contursi, William Cooper, T. Cornez, S. Cowell, F. Crifo, M. Cropper, M. Crosta, C. Crowley, Carlos Dafonte, A. Dapergolas, Patrice David, P. de Laverny, F. De Luise, R. De March, J. De Ridder, R. de Souza, E. F. del Peloso, E. del Pozo, Marco Delbò, A. Delgado, J.-B. Delisle, C. Demouchy, T. E. Dharmawardena, S. Diakité, C. Diener, E. Distefano, C. Dolding, H. Enke, C. Fabre, M. Fabrizio, S. Faigler, G. Fedorets, P. Fernique, A. Fienga, F. Figueras, Y. Fournier, C. Fouron, Francesca Fragkoudi, M. Gai, A. Garcia-Gutierrez, M. Garcia-Reinaldos, Miguel García-Torres, A. Garofalo, A. Gavel, P. Gavras, P. Giacobbe, G. Gilmore, S. Girona, G. Giuffrida, Roy Gomel, A. Gómez, J. González-Núñez, I. González-Santamaría, Mikael Granvik, P. Guillout, J. Guiraud, R. Gutiérrez–Sánchez, L. P. Guy, D. Hatzidimitriou, M. Häuser, M. Haywood, A. Helmer, A. Helmi, M. H. Sarmiento, S. L. Hidalgo, N. Hładczuk, G. Holland, H. E. Huckle, K. Jardine, G. Jasniewicz, A. Jean-Antoine Piccolo, Ó. Jiménez-Arranz, J. Juaristi Campillo, F. Julbé, L. Karbevska, P. Kervella, S. Khanna, G. Kordopatis, A. J. Korn, Á. Kóspál, Z. Kostrzewa-Rutkowska, K. Kruszyńska, M. Kun, P. Laizeau, S. Lambert, A. F. Lanza, Y. Lasne, J.-F. Le Campion, Y. Lebreton, T. Lebzelter, S. Leccia, N. Leclerc, I. Lecœur-Taı̈bi, S. Liao, E. Licata, H. E. P. Lindstrøm, Tim Lister, E. Livanou, A. Lobel,
Gaia-CRF3 is the celestial reference frame for positions and proper motions in the third release of data from the Gaia mission, Gaia DR3 (and for the early third release, Gaia EDR3, which contains identical astrometric results). The reference frame is defined by the positions and proper motions at epoch 2016.0 for a specific set of extragalactic sources in the (E)DR3 catalogue. We describe the construction of Gaia-CRF3, and its properties in terms of the distributions in magnitude, colour, and astrometric ...
EDP Sciences
Z. Prudil, Andreas Koch, B. Lemasle, E. K. Grebel, Tommaso Marchetti, C. J. Hansen, J. Crestani, V. F. Braga, G. Bono, Brian Chaboyer, M. Fabrizio, M. Dall’Ora, C. E. Martínez-Vázquez,
We report the discovery of high velocity candidates among RR~Lyrae stars found in the Milky Way halo. We identified 9 RR~Lyrae stars with Galactocentric velocities exceeding the local escape velocity based on the assumed Galaxy potential. Based on close examination of their orbits', we ruled out their ejection location in the Milky Way disk and bulge. The spatial distribution revealed that seven out of 9 pulsators overlap with the position of the Sagittarius stellar stream. Two out of these seven ...
Tópico(s): Astrophysics and Star Formation Studies
2022 - EDP Sciences | Astronomy and Astrophysics
M. Martinelli, C. J. A. P. Martins, Savvas Nesseris, I. Tutusaus, Alain Blanchard, S. Camera, C. Carbone, Santiago Casas, V. Pettorino, Z. Sakr, Victoria Yankelevich, D. Sapone, A. Amara, N. Auricchio, C. Bodendorf, D. Bonino, E. Branchini, V. Capobianco, J. Carretero, M. Castellano, S. Cavuoti, A. Cimatti, R. Clédassou, L. Corcione, A. Costille, H. Degaudenzi, M. Douspis, F. Dubath, S. Dusini, A. Ealet, S. Ferriol, M. Frailis, E. Franceschi, B. Garilli, C. Giocoli, A. Grazian, F. Grupp, S. V. H. Haugan, W. A. Holmes, F. Hormuth, K. Jahnkę, A. Kiessling, M. Kümmel, M. Kunz, H. Kurki‐Suonio, S. Ligori, P. B. Lilje, I. Lloro, O. Mansutti, O. Marggraf, K. Markovič, R. Massey, M. Meneghetti, G. Meylan, L. Moscardini, S. Niemi, C. Padilla Aranda, S. Paltani, F. Pasian, K. Pedersen, S. Pires, M. Poncet, L. Popa, F. Raison, R. Rébolo, Jason Rhodes, M. Roncarelli, E. Rossetti, R. P. Saglia, A. Secroun, G. Seidel, S. Serrano, C. Sirignano, G. Sirri, Jean‐Luc Starck, D. Tavagnacco, A. N. Taylor, I. Tereno, R. Toledo-Moreo, L. Valenziano, Yun Wang, G. Zamorani, J. Zoubian, Marco Baldi, M. Brescia, G. Congedo, L. Conversi, Y. Copin, Giulio Fabbian, R. Farinelli, E. Medinaceli, S. Mei, G. Polenta, E. Romelli, T. Vassallo,
In physically realistic, scalar-field-based dynamical dark energy models (including, e.g., quintessence), one naturally expects the scalar field to couple to the rest of the model’s degrees of freedom. In particular, a coupling to the electromagnetic sector leads to a time (redshift) dependence in the fine-structure constant and a violation of the weak equivalence principle. Here we extend the previous Euclid forecast constraints on dark energy models to this enlarged (but physically more realistic) ...
Tópico(s): Solar and Space Plasma Dynamics
2021 - EDP Sciences | Astronomy and Astrophysics
A. A. Simon, H. H. Kaplan, E. A. Cloutis, V. E. Hamilton, C. Lantz, D. Reuter, D. Trang, S. Fornasier, B. E. Clark, D. S. Lauretta,
Context. The NASA Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission has obtained thousands of spectra of asteroid (101955) Bennu with the OSIRIS-REx Visible and InfraRed Spectrometer. Aims. We present a spectral search for minor absorption bands and determine compositional variations on the surface of Bennu. Methods. Reflectance spectra with low and high spatial resolutions were analyzed for evidence of weak absorption bands. Spectra were ...
Tópico(s): Planetary Science and Exploration
2020 - EDP Sciences | Astronomy and Astrophysics
Produção Nacional
Revisado por pares
P. A. B. Galli, H. Bouy, J. Olivares, N. Miret-Roig, R. G. Vieira, L. M. Sarro, D. Barrado, Á. Berihuete, C. Bertout, E. Bertin, Jean‐Charles Cuillandre,
Context: Lupus is recognised as one of the closest star-forming regions, but the lack of trigonometric parallaxes in the pre-Gaia era hampered many studies on the kinematic properties of this region and led to incomplete censuses of its stellar population. Aims: We use the second data release of the Gaia space mission combined with published ancillary radial velocity data to revise the census of stars and investigate the 6D structure of the Lupus complex. Methods: We performed a new membership analysis ...
Tópico(s): Astronomy and Astrophysical Research
2020 - EDP Sciences | Astronomy and Astrophysics
Alessandro Sonnenfeld, A. Verma, Anupreeta More, Elisabeth Baeten, Christine Macmillan, Kenneth C. Wong, J. H. H. Chan, Anton T. Jaelani, Chien‐Hsiu Lee, Masamune Oguri, Cristian E. Rusu, Marten Veldthuis, Laura Trouille, Philip J. Marshall, R. Hutchings, Campbell Allen, James O’ Donnell, Claude Cornen, C. Davis, Adam McMaster, Chris Lintott, Grant Miller,
Strong lenses are extremely useful probes of the distribution of matter on galaxy and cluster scales at cosmological distances, but are rare and difficult to find. The number of currently known lenses is on the order of 1,000. We wish to use crowdsourcing to carry out a lens search targeting massive galaxies selected from over 442 square degrees of photometric data from the Hyper Suprime-Cam (HSC) survey. We selected a sample of $\sim300,000$ galaxies with photometric redshifts in the range $0.2 < z_{ ...
Tópico(s): Astronomy and Astrophysical Research
2020 - EDP Sciences | Astronomy and Astrophysics
R. Angioni, E. Ros, M. Kadler, R. Ojha, Cornelia Müller, P. G. Edwards, P. R. Burd, B. Carpenter, M. Dutka, Sergei Gulyaev, H. Häse, S. Horiuchi, F. Krauß, J. E. J. Lovell, T. Natusch, Chris Phillips, Christian Plötz, J. F. H. Quick, F. Rösch, R. Schulz, J. Stevens, A. K. Tzioumis, S. Weston, J. Wilms, J. A. Zensus,
Aims . In the framework of the multi-wavelength and very long baseline interferometry (VLBI) monitoring program TANAMI (Tracking Active Nuclei with Austral Milliarcsecond Interferometry), we study the evolution of the parsec-scale radio emission in radio galaxies in the southern hemisphere and their relationship to the γ -ray properties of the sources. Our study investigates systematically, for the first time, the relationship between the two energy regimes in radio galaxies. In this first paper, we ...
Tópico(s): Galaxies: Formation, Evolution, Phenomena
2019 - EDP Sciences | Astronomy and Astrophysics
Arianna Dolfi, E. Branchini, Maciej Bilicki, A. Balaguera-Antolínez, I. Prandoni, Rishikesh Pandit,
We investigate the clustering properties of radio sources in the Alternative Data Release 1 of the TIFR GMRT Sky Survey (TGSS), focusing on large angular scales, where previous analyses have detected a large clustering signal. After appropriate data selection, the TGSS sample we use contains ~110,000 sources selected at 150 MHz over ~70% of the sky. The survey footprint is largely superimposed on that of the NRAO VLA Sky Survey (NVSS) with the majority of TGSS sources having a counterpart in the NVSS ...
Tópico(s): Galaxies: Formation, Evolution, Phenomena
2019 - EDP Sciences | Astronomy and Astrophysics
We perform a survey of Oe and Be stars in the X-ray range. To this aim, we cross-correlated XMM-Newton and Chandra catalogs of X-ray sources with a list of Be stars, finding 84 matches in total. Of these, 51 objects had enough counts for a spectral analysis. This paper provides the derived X-ray properties (X-ray luminosities, and whenever possible, hardness ratios, plasma temperatures, and variability assessment) of this largest ever sample of Oe and Be stars. The targets display a wide range in ...
Tópico(s): Astrophysical Phenomena and Observations
2018 - EDP Sciences | Astronomy and Astrophysics
The low-mass members of OB associations, expected to be a major component of their total population, are in most cases poorly studied because of the difficulty of selecting these faint stars in crowded sky regions. Our knowledge of many OB associations relies only on a relatively small number of massive members. We study here the Sco OB1 association, with the aim of a better characterization of its properties such as global size and shape, member clusters and their morphology, age and formation ...
Tópico(s): Astrophysical Phenomena and Observations
2018 - EDP Sciences | Astronomy and Astrophysics
B. Buysschaert, C. Aerts, D. M. Bowman, C. Johnston, T. Van Reeth, M. G. Pedersen, S. Mathis, C. Neiner,
The large-scale magnetic fields detected at the surface of about 10% of hot stars extend into the stellar interior, where they may alter the structure. Deep inner regions of stars are only observable using asteroseismology. Here, we investigated the pulsating magnetic B3.5V star HD43317, inferred its interior properties and assessed whether the dipolar magnetic field with a surface strength of $B_p = 1312 \pm 332$G caused different properties compared to those of non-magnetic stars. We analysed the ...
Tópico(s): Astro and Planetary Science
2018 - EDP Sciences | Astronomy and Astrophysics
P. Janardhan, K. Fujiki, Madhusudan Ingale, Susanta Kumar Bisoi, Diptiranjan Rout,
Aims: To investigate solar polar fields during cycle 24, using measurements of solar magnetic fields in the latitude range 55 - 90 degree and 78 - 90 degree, to report a prolonged and unusual hemispheric asymmetry in the polar field reversal pattern in solar cycle 24. Methods: This study was carried out using medium resolution line-of-sight synoptic magnetograms from the magnetic database of the National Solar Observatory at Kitt Peak (NSO/KP), USA for the period between February 1975 and October 2017, ...
Tópico(s): Stellar, planetary, and galactic studies
2018 - EDP Sciences | Astronomy and Astrophysics
S. Shetye, S. Van Eck, A. Jorissen, H. Van Winckel, L. Siess, S. Goriely, A. Escorza, Drisya Karinkuzhi, B. Plez,
Context. S stars are transition objects between M-type giants and carbon stars on the asymptotic giant branch (AGB). They are characterized by overabundances of s-process elements. Roughly half of them are enhanced in technetium (Tc), an s-process element with no stable isotope, while the other half lack technetium. This dichotomy arises from the fact that Tc-rich S stars are intrinsically producing s-process elements and have undergone third dredge-up (TDU) events, while Tc-poor S stars owe their ...
Tópico(s): Astro and Planetary Science
2018 - EDP Sciences | Astronomy and Astrophysics
E. Zari, A. G. A. Brown, J. H. J. de Bruijne, C. F. Manara, P. T. de Zeeuw,
We use the first data release of the Gaia mission to explore the three dimensional arrangement and the age ordering of the many stellar groups towards the Orion OB association, aiming at a new classification and characterization of the stellar population. We make use of the parallaxes and proper motions provided in the Tycho Gaia Astrometric Solution (TGAS) sub-set of the Gaia catalogue, and of the combination of Gaia and 2MASS photometry. In TGAS we find evidence for the presence of a young population, ...
Tópico(s): Astro and Planetary Science
2017 - EDP Sciences | Astronomy and Astrophysics
Darshan Kakkad, V. Mainieri, P. Padovani, G. Cresci, B. Husemann, Stefano Carniani, M. Brusa, A. Lamastra, G. Lanzuisi, E. Piconcelli, Malte Schramm,
AGN driven outflows are invoked in numerical simulations to reproduce several observed properties of local galaxies. The z > 1 epoch is of particular interest as it was during this time that the volume averaged star formation and the accretion rate of black holes were maximum. Radiatively driven outflows are therefore believed to be common during this epoch. We aim to trace and characterize outflows in AGN hosts with high mass accretion rates at z > 1 using integral field spectroscopy. We obtain spatially- ...
Tópico(s): Astronomy and Astrophysical Research
2016 - EDP Sciences | Astronomy and Astrophysics
Tim-Oliver Husser, Sebastian Kamann, S. Dreizler, Martin Wendt, Nina Wulff, Roland Bacon, L. Wisotzki, J. Brinchmann, Peter M. Weilbacher, Martin M. Roth, A. Monreal‐Ibero,
Aims. We demonstrate the high multiplex advantage of crowded field 3D spectroscopy with the new integral field spectrograph MUSE by means of a spectroscopic analysis of more than 12 000 individual stars in the globular cluster NGC 6397.
Tópico(s): Astronomy and Astrophysical Research
2016 - EDP Sciences | Astronomy and Astrophysics
Florian Niederhofer, N. Bastian, V. Kozhurina-Platais, M. Hilker, S. E. de Mink, I. Cabrera-Ziri, Chengyuan Li, Barbara Ercolano,
Most star clusters at an intermediate age (1-2 Gyr) in the Large and Small Magellanic Clouds show a puzzling feature in their color-magnitude diagrams (CMD) that is not in agreement with a simple stellar population. The main sequence turn-off of these clusters is much broader than would be expected from photometric uncertainties. One interpretation of this feature is that age spreads of the order 200-500 Myr exist within individual clusters, although this interpretation is highly debated. Such large ...
Tópico(s): Astrophysical Phenomena and Observations
2015 - EDP Sciences | Astronomy and Astrophysics
H. Bouy, E. Bertin, L. M. Sarro, D. Barrado, E. Moraux, J. Bouvier, Jean‐Charles Cuillandre, Á. Berihuete, J. Olivares, Y. Beletsky,
The DANCe survey provides photometric and astrometric (position and proper motion) measurements for approximately 2 millions unique sources in a region encompassing $\approx$80deg$^{2}$ centered around the Pleiades cluster. We aim at deriving a complete census of the Pleiades, and measure the mass and luminosity function of the cluster. Using the probabilistic selection method described in Sarro+2014, we identify high probability members in the DANCe ($i\ge$14mag) and Tycho-2 ($V\lesssim$12mag) catalogues, ...
Tópico(s): Gamma-ray bursts and supernovae
2015 - EDP Sciences | Astronomy and Astrophysics
B. Balmaverde, A. Marconi, M. Brusa, Stefano Carniani, G. Cresci, Elisabeta Lusso, R. Maiolino, F. Mannucci, Tohru Nagao,
The aim of this paper is to test the basic model of negative AGN feedback. According to this model, once the central black hole accretes at the Eddington limit and reaches a certain critical mass, AGN driven outflows blow out gas, suppressing star formation in the host galaxy and self-regulating black hole growth. We consider a sample of 224 quasars selected from the SDSS at z<1 observed in the infrared band by Herschel. We evaluate the star formation rate in relation to several outflow signatures ...
Tópico(s): Astronomy and Astrophysical Research
2015 - EDP Sciences | Astronomy and Astrophysics
Jennifer West, Samar Safi‐Harb, Tess Jaffe, R. Kothes, T. L. Landecker, T. Foster,
The study of supernova remnants (SNRs) is fundamental to understanding the chemical enrichment and magnetism in galaxies, including our own Milky Way. In an effort to understand the connection between the morphology of SNRs and the Galactic magnetic field (GMF), we have examined the radio images of all known SNRs in our Galaxy and compiled a large sample that have an "axisymmetric" morphology, which we define to mean SNRs with a "bilateral" or "barrel"-shaped morphology, in addition to one-sided shells. ...
Tópico(s): Gamma-ray bursts and supernovae
2015 - EDP Sciences | Astronomy and Astrophysics
Zhenghua Huang, M. S. Madjarska, K. Koleva, J. G. Doyle, P. Duchlev, Momchil Dechev, K. Reardon,
We study a sequence of eruptive events including filament eruption, a GOES C4.3 flare and a coronal mass ejection. We aim to identify the possible trigger(s) and precursor(s) of the filament destabilisation; investigate flare kernel characteristics; flare ribbons/kernels formation and evolution; study the interrelation of the filament-eruption/flare/coronal-mass-ejection phenomena as part of the integral active-region magnetic field configuration; determine H\alpha\ line profile evolution during ...
Tópico(s): Ionosphere and magnetosphere dynamics
2014 - EDP Sciences | Astronomy and Astrophysics
Circumstellar disks in binaries are perturbed by the companion gravity causing significant alterations of the disk morphology. Spiral waves due to the companion tidal force also develop in the vertical direction and affect the disk temperature profile. These effects may significantly influence the process of planet formation. We perform 3D numerical simulations of disks in binaries with different initial dynamical configurations and physical parameters. Our goal is to investigate their evolution ...
Tópico(s): Stellar, planetary, and galactic studies
2013 - EDP Sciences | Astronomy and Astrophysics
Richard R. Lane, R. Salinas, T. Richtler,
The globular cluster (GC) systems of isolated elliptical galaxies have only recently begun to be studied in detail, and may exhibit morphological connections to the evolutionary histories of their hosts. Here we present the first in a series of wide-field analyses of the GC systems of the isolated ellipticals - Washington C and R photometry of NGC 3585 and NGC 5812 down to ~24 mag. The GC systems are characterised, with each system displaying both the "Universal" blue peak at (C-R)~1.3, and a red peak, ...
Tópico(s): Astronomy and Astrophysical Research
2012 - EDP Sciences | Astronomy and Astrophysics
Steve Ertel, S. Wolf, J. P. Marshall, C. Eiroa, J.‐C. Augereau, A. V. Krivov, T. Löhne, Olivier Absil, D. R. Ardila, M. J. Arévalo, A. Bayo, G. Bryden, C. del Burgo, J. Greaves, G. M. Kennedy, J. P. Lebreton, R. Liseau, J. Maldonado, B. Montesinos, A. Mora, G. L. Pilbratt, J. Sanz‐Forcada, Karl R. Stapelfeldt, G. J. White,
Aims. We present photometric data of debris disks around HIP 103389 (HD 199260), HIP 107350 (HN Peg, HD206860), and HIP 114948 (HD 219482), obtained in the context of our Herschel Open Time Key Program DUNES (DUst around NEarby Stars). Methods. We used Herschel/PACS to detect the thermal emission of the three debris disks with a 3 sigma sensitivity of a few mJy at 100 um and 160 um. In addition, we obtained Herschel/PACS photometric data at 70 um for HIP 103389. Two different approaches are applied ...
Tópico(s): Astro and Planetary Science
2012 - EDP Sciences | Astronomy and Astrophysics
T. Birnstiel, Hubert Klahr, Barbara Ercolano,
Context: The global size and spatial distribution of dust is an important ingredient in the structure and evolution of protoplanetary disks and in the formation of larger bodies, such as planetesimals. Aims: We aim to derive simple equations that explain the global evolution of the dust surface density profile and the upper limit of the grain size distribution and which can readily be used for further modeling or for interpreting of observational data. Methods: We have developed a simple model that ...
Tópico(s): Stellar, planetary, and galactic studies
2012 - EDP Sciences | Astronomy and Astrophysics